I look forward to reading the completed post, I think there is a lot of good stuff in the draft.
What I noticed from the draft: There's nothing obvious about Google per se, in terms of the material. It could be company X you've been working at. Also, insights cumulatively cover junior dev, senior dev, and some manager experiences. So, audience for this particular piece was not clear to me.
I am surmising this piece complements your "Efficient Engineering" work-in-progress. I'll be curious to read that too.